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G. NEWSUM TWO FEED SINGLE CYLINDER PRINTING MACHINE. No. 361,538. Patented Apr. 19, 1887.

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'Patente d Apr. 19, 1887.

UNITED STATES PATENT QFFICE.

GEORGE NE\VSUM, OE LEEDS, COUNTY OF YORK, ENGLAND.

TWO-FEED SINGLE-CYLINDER PRINTING-'MACHINE.

SPECIFICATION forming part of Letters Patent No. 361,538, dated April 19, 1887. Application filed September 9. 1886. Serial No. 213.121. (No model.) Patented in England July 3, 1886,No. 8,721.

To all whom it may concern:

Be it known that I, GEORGE NEwsUM, a subject of the Queen of Great Britain and Ireland,

' simpler manner without the use of cams, so

that it will only revolve one way, and to combine with the latter feeding and delivery apparatus in such a manner that two sheets may be printed with one revolution of the impression-oylinder; and it consists in forming the frame and brackets for supporting the divided shafts in one casting arranged to rest on flanges on the side frames, and fitting to the cylinder driving-wheels and cylinder catches that operate the impression-cylinder in one direction only, and to combine with the latter feedingboards and delivery apparatus so arranged that two sheets fed from different points may be printed with one revolution of the cylinder. Y

In the accompanying drawings, Figure 1 represents a side elevation of a two-feeder single-cylinder letterpress-printing machine as arranged according to my invention, with one of the side frames removed to show the interior, the impression-cylinder being in section. Fig. 2 is a plan of the machine; Fig. 3, a transverse section through the driving end of themachine; Fig. 4, a sectional detail of the bottom portion of the side frames, intermediate frame, and bearings for supporting the divided shaft; Fig. 5, an end view of the cylinder driving-wheels with a portion cut away to show the driving-catches; Fig. 6, a View showing the movable catch attached to the wheel raised to the position when the cylinder is stationary, and Fig. 7 an end view of the brake pulley and strap.

The side frames, A, are prepared with a projecting flange, B, on the inside of each, which are planed to a straight and level sur: face, and the intermediate frame, 0, along with the brackets C, for supporting the divided shafts D, are cast in one piece with a recess, a, on each side, which are planed to lie on the flanges B of the side frames, A, thereby supporting the frame independently of the bolts A for securing the same, thereby simplifying the construction and allowing the in termediate frame to be easily removed, and when replaced to occupy the same position.

By casting the brackets 0 along with the intermediate frame, 0, the journals supporting thedivided shafts D cannot twist, therefore reducing the liability of derangement to the connecting crank-pin E,upon which is mounted the connecting-rod F, for giving reciprocating motion to the table G by means of the spurwheel F, coupled to the said connecting-rod and geared between the fixed toothed rack H and the toothed rack H, secured to the under side of the table G.

In order to drive the impression-cylinder J in one direction only without the intervention of cams,I secure to each end of the impressioncylinder J a curved stop, J, one end of which is slightly hollow, the other being curved and pointed, and to each spur-wheel K K, free on the cylinder-shaft and gearing with racks on the table, as in ordinary machines, I secure a stud, and mount thereon a catch, K, held by the spring S in the necessary position against the hollow end of the curved stop J while driving the impression-cylinder for printing, and on the reversal in the motion of the table G the spring S allows the catch K to yield on coming in contact with the curved and pointed end, thereby leaving the cylinder stationary until the table moves in the forward direction for printing.

\Vhen it is desired that the impression-cylinder J should remain stationary and the table G to reciprocate, I move the handle L into a notch formed in the side frame to the position as shown by Fig. 6, the handle being connected to the shaft L, which extends across the machine, and to which are attached two curved arms, L, which raise the catches K clear of the fixed curved stops J by reason of the small pulleys P coming in contact therewith, thus allowing the table to move and wheels K K to rotate backward and forward, and the impression-cylinder to remain stationary, which is kept rigid by a lever, L secured on the same shaft, entering a recess, as shown by. Fig. 7, formed in the flange of the brake-pulley M,secured on the cylinder-shaft.

The cylinder J is prepared with two impression-surfaces and two longitudinal openings through the cylinder diametricallyopposite each other, in which are fitted grippers similar in construction and operated ina similar manner to those described in English specification No. 1,845,A-. D. 1874, for holding the paper to the cylinder during the operation of printing and releasing the same when printed.

The type-forms T and T are secured to the table G, and the inking of the former accomplished by any of the well-known methods, and on commencing to print the ordinary feed-gages are set to suit the paper and type, and the sheets fed alternately to the impression-cylinder,first from the bottom feed-board, N, and then from the upper feed-board, O.

The sheets from the bottom feed-board, N, after receiving the impression from the type T, are removed on the release of the impressioncylinder grippers by the delivery apparatus D, described in English specification No. 632, A. D. 1879, and deposited on the receivingboard N. The other sheets, taking the impression from type T, are removed on the release of the respective cylinder-grippers by grippers similar to those before mentioned,

which are attached to the small revolving cylinder Q, and conveyed by tapes T to the common delivery-flier It, operated in the ordinary manner by a reciprocating toothed rack gearing with the pinion P,*secured on the fliershaft R.

When both sheets have been printed, the table G will have traveled to its limit, and on the re-- turn-stroke the impressioncylinder J will remain stationary. The catches K, yielding, pass over the curved stops J, in the manner before described, the brake-strap M gripping the pulley M sufficiently to keep the'cylinder firm until the commencement of the returnstroke of the table, when the strap M will be clear of the pulley M as soon as the raised portion M is free of the small pulley V, mounted on the arm Yof the brake-strap.

I form two raised portions, M and M", on the circumference of the brake-pulley M, one of which is the means of holding the cylinder J firm when stationary during the return of the table G,and in addition, by M and M operating the brake-strap M, friction is put upon the pulley immediately before the impression is taken, by which means any backlash there may be in the teeth of the racks and wheelsK is removed, bringing the teeth faceable and insuring the printing on all the sheets to be of the same register.

What I claim is 1. In a printingmachine, the combination, with the side frames, A, having flanges B on the inner side of each piece, of the intermediate bracket-frame, 0, having a recess, a, on each side to rest on'the flanges B, substantially as described.

2. The combination, with the impressioncylinder J, having a curved stop, J, on each end, and the tableGand its racks, ofthespurwheels K K, mounted loosely on the cylindershaft and provided with catches K, the pulleys P, springs S, shaft L, having arms UL, and the lever L, substantially as described.

3. The combination of the impression-cylinder J, the brake-pulley M, secured on the cylinder-shaft and provided with circumferential raised portions M" M", the pulley V, arm Y, and brake strap M, substantially as described.

4. The combination of the cylinder. J, having two impressionsurfaces and two longitudinal openings with grippers fitted therein, the table G, provided with type-forms T T, the lower feed-board, N, upper feed-board, 0, delivery apparatus D, receiving-board N, cylinder Q, tapes T", and flier R, substantially as described.

In testimony whereof I have signed my name 9 to this specilicationin thepresence of two subscribing witnesses.

G. NEWSUM.

Witnesses:

JOHN GILL, WM. G. GHAMBERS. 

